{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "The use of diethylaminoethyl microspin column to isolate spiked lunasin in human plasma showed that most lunasin ( 37 . 8 - 46 . 5 % ) bound to the column eluted with Tris - HCl buffer , pH 7 . 5 with a yield up to 76 . 6 % ."}
{"Chemical": ["diethylaminoethyl", "Tris - HCl"]}